| abstract |
Aroundnalso lithium-containing glass ceramics for applications with combustion heatingnto be able to usenthe invention provides a heating device with combustion-heatednGlass-ceramic article before, in which the glass-ceramic article anLithium aluminosilicate glass-ceramic with mixed crystals, whereinnin the mixed crystals, silicon ions partly due to aluminum ionsnare replaced, and which in addition to lithium ions in addition magnesium and / ornContain zinc ions and zinc and / or magnesium ions in channels ofnCrystal structure of the mixed crystals are present. |